| 基于水质目标的洞庭湖区堤垸生态需水量研究 |
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| 引用本文： | 安秋香,李洪翔,黄兵,黎昔春. 基于水质目标的洞庭湖区堤垸生态需水量研究[J]. 长江科学院院报, 2022, 39(9): 43-48. DOI: 10.11988/ckyyb.20210578 |
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| 作者姓名： | 安秋香 李洪翔 黄兵 黎昔春 |
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| 作者单位： | 1.湖南省水利水电勘测设计规划研究总院有限公司,长沙 410007; 2.洞庭湖水环境治理与生态修复湖南省重点实验室,长沙 410007 |
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| 基金项目： | 湖南省水利科技计划项目(XSKJ2019081-05,[2017]230-15);湖南省自然科学基金项目(2020JJ5316) |
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| 摘 要： | 洞庭湖区堤垸众多,垸内水体富营养化严重,水体流通不畅且水文观测资料匮乏,导致垸内生态需水量难以计算。以洞庭湖北部地区25个堤垸为研究对象,以垸内水体3 a后达到Ⅲ类水质为目标,在实地调研和勘查的基础上设置88个地表水水质采样点监测氨氮污染物浓度。基于环境稀释水量法建立了堤垸生态需水量计算模型,经与换水周期法对比分析,得到补水条件下洞庭湖北部地区堤垸生态需水量为32.161亿m3。研究成果对改善洞庭湖区垸内生态环境具有重要参考价值。
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| 关 键 词： | 生态需水量 水质目标 环境稀释水量法 堤垸 洞庭湖 |
| 收稿时间： | 2021-06-10 |
| 修稿时间： | 2021-08-10 |
Estimating Ecological Water Demand of Polders in Dongting Lake Area Based on Environmental Dilution Method |
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| AN Qiu-xiang,LI Hong-xiang,HUANG Bing,LI Xi-chun. Estimating Ecological Water Demand of Polders in Dongting Lake Area Based on Environmental Dilution Method[J]. Journal of Yangtze River Scientific Research Institute, 2022, 39(9): 43-48. DOI: 10.11988/ckyyb.20210578 |
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| Authors: | AN Qiu-xiang LI Hong-xiang HUANG Bing LI Xi-chun |
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| Affiliation: | 1. Hunan Water Resources and Hydropower Survey, Design, Planning and Research Co., Ltd., Changsha 410007, China; 2. Hunan Provincial Key Laboratory on Dongting Lake Water Environment Management and Ecological Restoration, Changsha 410007, China |
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| Abstract: | The ecological water demand in the plenty polders of the Dongting Lake are difficult to calculate due to the lack of observation data and inadequate water circulation caused by severe eutrophication. To achieve the goal of reaching grade III water quality in 25 polders in the northern part of Dongting Lake in three years, we arranged 88 surface water sampling points and monitored the concentration of ammonia nitrogen pollutants based on field survey and investigation. By using the environmental dilution method, we established a calculation model for the ecological water demand of polders and obtained the ecological water demand of polders in north Dongting Lake in the presence of water supplement as 3.216 billion m3 in comparison with the result of water exchange cycle method. The research finding is of reference value for improving the ecological environment in polders of the Dongting Lake area. |
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| Keywords: | ecological water demand water quality target environmental dilution method polder Dongting Lake |
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